FDSCTE 2200 Lecture Notes - Lecture 1: Central Nervous System, Taste Bud, Energy Homeostasis

• School: Ohio State University
• Department: Food Science & Technology
• Course: FDSCTE 2200
• Professor: Srilatha Kolluri

Document Summary

Satiety: physical condition of being full; inhibitory (stop) process. Energy homeostasis: body controls energy storage; balance between energy intake (calories from food) and energy expenditure (burning energy) Involves integration of many neutral and hormonal signals between the central nervous system (cns) and the gastrointestinal (gi) tract. The hypothalamus and the brainstem are directly involved in energy homeostasis. Brain centers monitor levels of immediately available energy (glucose) and long term energy (adipose or fat tissue) When either is deficient, neurocircuitry is activated; potent increase in both glucose release by the liver and food intake. Impulse to eat is signaled until blood glucose and leptin levels rise sufficiently to reverse the impulse. Leptin: a hormone made and secreted by adipocytes (fat cells) that circulates in proportion to body fat stores, enters the brain in proportion to its blood plasma level, and acts on neurons that regulate energy.